« Return to Thread: $hollow.message cannot be resolved
$hollow.message cannot be resolved
by SigmaSquared
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Velocity isnt picking up the class and the var in that class (i.e. hollow.message).
I get the following error:
Velocity [debug] Null reference [template '/index.vm', line 16, column 28] : $Hollow.message cannot be resolved.
message = 'asdf' in my java file. What gives?
I have the following directories:
These are my files:
index.vm
<html>
<body>
I'm a velocity template processed using the VelocityViewServlet.
#if( $XHTML )
#set( $br = "<br />" )
#else
#set( $br = "<br>" )
#end
$br
$br
Here we use a custom tool: $hollow.message
$br
$br
Lets count : #foreach($i in [1..5])$i #end
$br
$br
Let's play with a hashmap:$br
first add foo: $map.put("foo",$foo)$br
then add bar: $map.put("bar",$bar)$br
$br
and that gives us $map
$br
$br
Here we get the date from the DateTool: $date.medium
$br
$br
#if( $isSimple )
This is simple#if( $XHTML ) xhtml#end app version ${version}.
#end
$br
$br
Click here to see the VelocityViewTag handle the same VTL markup.
</body>
</html>
Hollow.java
public class Hollow {
private String message = "asdf";
public String getMessage()
{
return message;
}
public void setMessage(String m)
{
message = m;
}
/** To test exception handling in templates. */
public boolean whine() {
throw new IllegalArgumentException();
}
}
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
<!--
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the License for the
specific language governing permissions and limitations
under the License.
-->
<web-app>
<servlet>
<servlet-name>velocity</servlet-name>
<servlet-class>org.apache.velocity.tools.view.VelocityViewServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>velocity</servlet-name>
<url-pattern>*.vm</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.vm</welcome-file>
</welcome-file-list>
</web-app>
tools.xml
<?xml version="1.0"?>
<!--
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the License for the
specific language governing permissions and limitations
under the License.
-->
<tools>
<data type="boolean" key="xhtml" value="true"/>
<data type="boolean" key="isSimple" value="true"/>
<data type="number" key="version" value="2.0"/>
<data key="foo">this is foo</data>
<data key="bar">this is bar.</data>
<toolbox scope="request">
<tool key="toytool" class="Hollow" restrictTo="index*"/>
</toolbox>
<toolbox scope="session">
<tool key="map" class="java.util.HashMap"/>
</toolbox>
</tools>
I get the following error:
Velocity [debug] Null reference [template '/index.vm', line 16, column 28] : $Hollow.message cannot be resolved.
message = 'asdf' in my java file. What gives?
I have the following directories:
These are my files:
index.vm
<html>
<body>
I'm a velocity template processed using the VelocityViewServlet.
#if( $XHTML )
#set( $br = "<br />" )
#else
#set( $br = "<br>" )
#end
$br
$br
Here we use a custom tool: $hollow.message
$br
$br
Lets count : #foreach($i in [1..5])$i #end
$br
$br
Let's play with a hashmap:$br
first add foo: $map.put("foo",$foo)$br
then add bar: $map.put("bar",$bar)$br
$br
and that gives us $map
$br
$br
Here we get the date from the DateTool: $date.medium
$br
$br
#if( $isSimple )
This is simple#if( $XHTML ) xhtml#end app version ${version}.
#end
$br
$br
Click here to see the VelocityViewTag handle the same VTL markup.
</body>
</html>
Hollow.java
public class Hollow {
private String message = "asdf";
public String getMessage()
{
return message;
}
public void setMessage(String m)
{
message = m;
}
/** To test exception handling in templates. */
public boolean whine() {
throw new IllegalArgumentException();
}
}
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
<!--
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the License for the
specific language governing permissions and limitations
under the License.
-->
<web-app>
<servlet>
<servlet-name>velocity</servlet-name>
<servlet-class>org.apache.velocity.tools.view.VelocityViewServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>velocity</servlet-name>
<url-pattern>*.vm</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.vm</welcome-file>
</welcome-file-list>
</web-app>
tools.xml
<?xml version="1.0"?>
<!--
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the License for the
specific language governing permissions and limitations
under the License.
-->
<tools>
<data type="boolean" key="xhtml" value="true"/>
<data type="boolean" key="isSimple" value="true"/>
<data type="number" key="version" value="2.0"/>
<data key="foo">this is foo</data>
<data key="bar">this is bar.</data>
<toolbox scope="request">
<tool key="toytool" class="Hollow" restrictTo="index*"/>
</toolbox>
<toolbox scope="session">
<tool key="map" class="java.util.HashMap"/>
</toolbox>
</tools>
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